mcs/class/Microsoft.CSharp/Microsoft.CSharp.RuntimeBinder/RuntimeBinderContext.cs

   1 //
   2 // RuntimeBinderContext.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2009 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections.Generic;
  31 using Compiler = Mono.CSharp;
  32
  33 namespace Microsoft.CSharp.RuntimeBinder
  34 {
  35         sealed class RuntimeBinderContext : Compiler.IMemberContext
  36         {
  37                 readonly Compiler.ModuleContainer module;
  38                 readonly Type callingType;
  39                 readonly DynamicContext ctx;
  40                 Compiler.TypeSpec callingTypeImported;
  41
  42                 public RuntimeBinderContext (DynamicContext ctx, Compiler.TypeSpec callingType)
  43                 {
  44                         this.ctx = ctx;
  45                         this.module = ctx.Module;
  46                         this.callingTypeImported = callingType;
  47                 }
  48
  49                 public RuntimeBinderContext (DynamicContext ctx, Type callingType)
  50                 {
  51                         this.ctx = ctx;
  52                         this.module = ctx.Module;
  53                         this.callingType = callingType;
  54                 }
  55
  56                 #region IMemberContext Members
  57
  58                 public Compiler.TypeSpec CurrentType {
  59                         get {
  60                                 //
  61                                 // Delay importing of calling type to be compatible with .net
  62                                 // Some libraries are setting it to null which is invalid
  63                                 // but the NullReferenceException is thrown only when the context
  64                                 // is used and not during initialization
  65                                 //
  66                                 if (callingTypeImported == null && callingType != null)
  67                                         callingTypeImported = ctx.ImportType (callingType);
  68
  69                                 return callingTypeImported;
  70                         }
  71                 }
  72
  73                 public Compiler.TypeParameter[] CurrentTypeParameters {
  74                         get { throw new NotImplementedException (); }
  75                 }
  76
  77                 public Compiler.MemberCore CurrentMemberDefinition {
  78                         get {
  79                                 return null;
  80                         }
  81                 }
  82
  83                 public bool HasUnresolvedConstraints {
  84                         get {
  85                                 return false;
  86                         }
  87                 }
  88
  89                 public bool IsObsolete {
  90                         get {
  91                                 // Always true to ignore obsolete attribute checks
  92                                 return true;
  93                         }
  94                 }
  95
  96                 public bool IsUnsafe {
  97                         get {
  98                                 // Dynamic cannot be used with pointers
  99                                 return false;
 100                         }
 101                 }
 102
 103                 public bool IsStatic {
 104                         get {
 105                                 throw new NotImplementedException ();
 106                         }
 107                 }
 108
 109                 public Compiler.ModuleContainer Module {
 110                         get {
 111                                 return module;
 112                         }
 113                 }
 114
 115                 public string GetSignatureForError ()
 116                 {
 117                         throw new NotImplementedException ();
 118                 }
 119
 120                 public IList<Compiler.MethodSpec> LookupExtensionMethod (Compiler.TypeSpec extensionType, string name, int arity, ref Compiler.NamespaceEntry scope)
 121                 {
 122                         // No extension method lookup in this context
 123                         return null;
 124                 }
 125
 126                 public Compiler.FullNamedExpression LookupNamespaceOrType (string name, int arity, Mono.CSharp.Location loc, bool ignore_cs0104)
 127                 {
 128                         throw new NotImplementedException ();
 129                 }
 130
 131                 public Compiler.FullNamedExpression LookupNamespaceAlias (string name)
 132                 {
 133                         // No namespace aliases in this context
 134                         return null;
 135                 }
 136
 137                 #endregion
 138         }
 139 }